Convert a PDF to Tiff in code

[hexOffender]

I have a scanning application that will be used for Patient ID cards and documents. Right now it takes a multipage Tiff and saves it as BLOB data to SQLserver. In order to scann duplex, I need to scan to PDF and then convert to a TIFF and let the app continue on its merry way. Does anyone know what is the best way( and by best I mean easiest) to do this.